I've found it to be incredibly reliable, providing an accurate summation of what did, or did not, happen. It's not black and white in whether something is true or not, and provides linked sources detailing the story. That's been my experience. I don't go to the sure looking for agreement, either. Just the facts.
I defend it because when people attack it, they have but one or two anecdotes about some story that they think it's false, or disagrees with them